Concrete-mold



H. K. CARPENTER.

CONCRETE MOLD.

APPLICATION FILED MAY 20. 1920.

1,363,391 Patented Dec. 28, 1920.

2 E G m'fnesses AM/WI izvenfar HARRY K. CARPENTER, 0F GLARKSBURG, WESTVIRGINIA.

CONCRETE-MOLD.

Specification of Letters Patent.

Patented Dec. 28, 1929.

Application filed May 20, 1920. Serial No. 382,865.

To all whom it may concern:

Be it known that I, HARRY K. CARPENTER, a citizen of the United Statesresiding at Clarksburg, in the county of flarrison and State of WestVirginia, have invented certain new and useful Improvements inConcrete-Molds, of which the following is a specification.

My invention relates to forms or molds or concrete construction and morespecifically to devices of this character which are adapted for theconstruction of concrete floors and the supporting beams associatedtherewith.

Tts objects are to provide a device of this character which will becheap to manufacture, light in weight, simple in operation, and freefrom troublesome bolts, clamps, and complicated interlocking means.

A further object is to provide a device of this character which willreduce the cost of concrete construction by diminishing the time andlabor required. This is accomplished by the ease and rapidity with whichthe invention may be erected, adjusted, and removed.

Another object is to provide a device of the character described whichmay be conveniently adjusted to permit the construction of beams of avariety of depths. Uther objects of the invention will become apparentupon a more complete disclosure thereof.

For a better understanding of my invention reference is bad to theaccompanying drawings in which similar letters indicate correspondingparts throughout the several views in which-- Figure l is a transversesectional view of one unit; Fig. 2 is a transverse sectional View of aportion of concrete floor illustrating the use of a series of units andthe method of temporarily supporting the same for the placing of theconcrete; and Fig. 3 is a similar view illustrating the employment ofthe adjustable feature.

Referring now to the figures of the drawings, A represents an elongatedmetallic form adapted to support a floor-slab and to provide a mold forone side of each of two beams. This member is also denoted bythesubsequent references to floor-slab support. The letter B indicates anelongated metallic form which corresponds in length to A and is adaptedto complete a beam mold by connecting one of the depending sides of afloor-slab support A to the adjacent depending side of anotherfloor-slab support. This member is also denoted by the subsequentreferences to beam support. The letter C indicates a collapsible braceadapted to support the plate a of the floor-slab support A and tosupport and control the movement of the depending flexible sides I) andb of the said support A The letter D indicates a movable brace adaptedto support the upturned flexible sides 03 and d of the beam supportingform B. This brace, which is retained within the finished concrete beam,is of a shape which permits it to support the reinforcing rods F,illustrated in Figs. 2 and 3, which are employed in the construction ofthe beams. The sides I) and Z) of the form A are provided with thelongitudinally extending corrugations or grooves z and 2" respectively.The lower edges of the sides I; and b are formed into the longitudinallyextending channels j and 7" respectively. The sides (Z and d of the formB are provided with the longitudinally extending corrugations or groovesin and la respectively and terminate, at their upper edge, in thelongitudinally extending rolled edges Z and Z respectively. The groovesz' and i are equally spaced with respect to one another and the spacingof the rolled edges Z and Z and the grooves 70 and la respectivelycorrespond to the spacing of the grooves 2' and i. The rolled edge Z andthe grooves 70 are adapted to engage the grooves z" and the rolled edgeZ" and the grooves 76' are adapted to engage the grooves 2'. The brace Cconsists of the hinged arm 9 and the pivoted arms 6 and e. The arm 9 isattached at one end to the arm e and at the other end to the arm 6'while the arms e and e are pivoted at their upper ends to the plate fwhich bears upon the under side of a and prevents sagging of same underthe weight of the concrete. The letters m and m indicate the roundedlower ends of the arms 6 and e which are confined within the channels 7'and j respectively when the form is in use. When the forms are not inuse, the braces are removed to facilitate transportation and storage.The hinged arm 9 is movable upwardly but is limited in its downwardmovement by the flange h arm 9 will impart an upward movement to thearms a and 0 resulting in an outward movement of the sides cl. and drespectively causing the rolled edge Z and the corrugations l0 and therolled edge Z and the corrugations in to enter the corrugations z" and71 respectively. The operation of the brace C is clearly shown in Fig. 1. Obviously, the corrugations in the sides I) and b are concavewhen the corrugations in the sides at and (Z are convex and vice versa.

The operation of my invention is as follows:

.Suitable temporary supports are erected of timber as shown at E inFigs. 2 and 3 upon which are placed the required number of forms 13 intheir relative positions. The desired number of braces D are placedwithin the beam supporting forms B either before or after the same havebeen placed upon the support E and the required number of A forms,equipped with a suitable number of collapsible braces C, are then placedin position-one A form between each two 13 forms. The arms {7 of thebraces C are then lowered eitecting the engagement of the corrugationsin the sides of the A forms with the corrugations in the adjacent sidesof the B forms and resulting in a rigid whole well adapted for thepurposes intended. Figs. 1 and 2 illustrate the relative positions ofthe forms A and B when the depth of the beams are to correspond to thedepth of the sides of the form A. However, the beam depth can be readilyincreased by lowering the B forms with respect to the A forms and canalso be decreased by raising the 13 forms.

with respect to the A forms. Fig. 3 illustrates the latter condition andshows the manner of supporting the beam molds by the addition of theblocks G tothe temporary support E. sides of the A forms and the rollededges of and corrugations in the sides of the B forms are so spaced thata variety of beam depths may be secured by the use of one set of forms.The forms may be either of a length to meet the requirements of aparticular type of building or may be extensible to accommodate beams ofa variety of spans. In the latter case, the meeting edges of the formsmay be secured together in any suit able manner.

Having thus described my invention, the

The corrugations in; the

structural elements of which are susceptible to modifications which fallwithin the scope of the appended claims, what I claim and desire tosecure by Letters Patent is:

1. In a device of the character described, the combination of aplurality of flexible metal forms, engagement means integral .with thesidesof the forms, and clamping members operatively associated with thesaid sides to operate the engagement means.

2. In a device of the character described, the combination of aplurality of flexible metal forms, supporting members for the sidesthereof, and supporting means integral with the sides adapted for mutualengagement responsive to the operation of alternate supporting members.-

3. In a sheet-metal form for concrete construction, the combination of aplurality of corrugated members with detachable means for sustaining thecorrugated members in operative contact.

4. In a sheet-metal form for concrete construction, the combination of aplurality of corrugated members with a plurality of collapsible bracesadapted to control the operation of the sides of alternate corrugatedmembers.

5. In a sheet-metal form for concrete construction the combination of aplurality of members with depending corrugated sides with a plurality ofmembers with upturned corrugated sides and means to support the saidcorrugated sides in operative contact.

6. A device of the character described comprising in combination aplurality of metal forms constituting molds for concrete floor-slabs andtheir supporting beams, supporting means integral with the sides oftheforms adapted to permit adjustment of said forms, collapsible bracesfor connecting said forms in assembled position, and a temporarysupporting structure for the whole.

7 A device of the character described comprising in combination aplurality of units consisting of two flexible metal forms provided withgrooved sides adapted for mutual engagement and vertically adjustable toregulate the beam depth, removable braces for supportingthe groovedsides in operative contact, and temporary means for supporting theassembled units.

8. In a device of the character described, the combination of aplurality of separable metal forms with supporting means integraltherewith and adapted to permit the vertical adjustment of theindividual forms, collapsible means for connecting the forms inassembled position, and temporary supporting means for the assembledforms.

9. In a metal form member for concrete construction, the combination ofa floor-slab mold provided with depending corrugated sides with a beammold provided with upturned corrugated sides, means to support thecorrugated sides of the beam mold, and means to expand the corrugatedsides of the floor-slab mold to cause the nesting of the respectivecorrugated sides.

10. A metal form member for concrete construction, comprising incombination a mold provided with depending sides terminating inlongitudinal channels, a mold pro-- vided with upturned sidesterminating in longitudinal rolled edges, correspondingly spacedlongitudinal grooves in the depending and upturned sides, andcollapsible supports adapted to engage the longitudinal channels andexpand the depending sides to control their engagement with the upturnedsides.

11. A metal form for concrete construction comprising in combination aplurality of floor-slab molds provided with depending corrugated sides,a plurality of beam molds with upturned corrugated sides adapted tocoactwith the adjacent dependent sides of two floor-slab molds tocomplete the beam molds, removable braces for supporting the upturnedsides, and collapsible braces engaging the depending sides and adaptedto expand the said depending sides to cause the engagement of same withthe adjacent upturned sides of the beam molds.-

12. A metal form for concrete construction comprising in combination aplurality of floor-slab molds formed sides provided with longitudinalgrooves, a plurality of beam molds formed with up turned sides providedwith longitudinal grooves, the longitudinal edges of the depending sidesbeing formed into channels and the longitudinal edges of the uptu'rnedsides being formed into rolled edges, the said grooves and rolled edgesof the upturned sides being spaced to correspond with the grooves in thedepending sides and adapting the respective sides for verticaladjustment, supports for beam reinforcing rods adapted to brace theupturned sides, and folding braces engaging the longitudi nal channelsand adapted to support the floor-slabs and to operate the dependingsides to cause the engagement of the grooves of the depending sides withthe grooves of the adjacent upturned sides and the subsequent release ofsame.

In testimon whereof I aflix my si nature.

ARRY K. CARPEN ER.

with depending

